Deportation bonus Conservative ignored in speech (11)
I believe the answer is:
extradition
'deportation' is the definition.
(thesaurus)
'bonus conservative ignored in speech' is the wordplay.
'bonus' becomes 'extra' (I've seen this before).
'conservative' becomes 'C' (UK political abbreviation).
'ignored in' suggests deleting specific letters.
'speech' becomes 'diction' (diction is someone's way of speaking).
'diction' with 'c' removed is 'dition'.
'extra'+'dition'='EXTRADITION'
(Other definitions for extradition that I've seen before include "delivery from abroad" , "Handing over offender" , "Return home < of one who offended" , "Handing over of a person to a foreign government" , "Process of handing over a criminal to a foreign jurisdiction" .)